Providing water and food is our main concern regarding potted roses. Because excess water drains away from our pots a lot of nutrients drain away too so we need to give something extra to our roses in pots.
Just like their brothers and sisters in the ground we give the potted roses a good handful of granulated organic fertilizer each month starting in March. We keep doing this each month including August. Because potted roses loose more nutrients we give them an extra amount of fertilizer: Each week we give them a feed of liquid organic fertilizer. I use organic liquid tomato fertilizer and organic liquid seaweed. Follow the label for the right amount of fertilizer and dissolve it in your water. Now you give as much as water till it drains from the drainage hole. So we do this weekly.
Recap:
As of March: Monthly, a big handful of organic granulated fertilizer. We repeat this till August
Weekly: An extra liquid feed with organic tomato or seaweed fertilizer.
IMPORTANT: Roses in pots are totally dependent on us for water. In spring and especially in summer we need to check our pots regularly and in summer this will mean daily. We use the finger test to determine if water is needed. We stick our finger all the way into the soil and if it comes out dry we start watering but when it comes out moist we don't need to water. In fall and winter we don't need to check each week but every few weeks. Roses can die very quickly from lack of water so be watchful!
Organic tomato or vegetable fertilizer is ideal as extra food for potted roses
Seaweed or Kelp liquid fertilizer is also ideal as an extra food source for our potted roses. You can also use it as foliar spray. Always follow the manual closely
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